Find the value of y when x equals -1.

8x - 2y =10

y = - 9

Step-by-step explanation:

Substitute in -1 for x

8(-1) - 2y = 10

-8 - 2y = 10

Subtract -8 from both sides

-8 - (-8) cancels out to 0

10 - (-8) = 18

We are left with:

-2y = 18

Divide by -2 on both sides.

-2y/-2 = y

18/-2 = -9

y = -9

Determine the defined range k=0
move expression to the left side and change its sign so it would be the problem = 0 

write all numerators above the least common denominator 6k (*2*)-Squared 
calculate the sum or the difference

check the solution in the defined range

hope this helped you